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This is the first patch of a series to implement support for the PowerPC ELFv2 ABI. While powerpc64le-linux will use ELFv2, and the existing powerpc64-linux code will continue to use ELFv1, in theory ELFv2 is also defined for big-endian systems (and ELFv1 was also defined for little-endian systems). Therefore this patch adds a new tdep->elf_abi variable to decide which ABI version to use. This is detected from the ELF header e_flags value; if this is not present, we default to ELFv2 on little-endian and ELFv1 otherwise. This patch does not yet introduce any actual difference in GDB's handling of the two ABIs. Those will be added by the remainder of this patch series. For an overview of the changes in ELFv2, have a look at the comments in the patch series that added ELFv2 to GCC, starting at: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01144.html gdb/ChangeLog: * ppc-tdep.h (enum powerpc_elf_abi): New data type. (struct gdbarch_tdep): New member elf_abi. * rs6000-tdep.c: Include "elf/ppc64.h". (rs6000_gdbarch_init): Detect ELF ABI version.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.